Hopkins, D. (2002). A teacher's guide to classroom research (3rd ed.). Open University Press.
Chicago-viite (17. p.)Hopkins, David. A Teacher's Guide to Classroom Research. 3rd ed. Berkshire, [England]: Open University Press, 2002.
MLA-viite (9. p.)Hopkins, David. A Teacher's Guide to Classroom Research. 3rd ed. Open University Press, 2002.
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